Load KML doesn't always show icons in OpenLayers 3?

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I've been able to successfully load a KML file and overlay the data on a map. However if I move the files to a new server (and update all references to the new server) none of my kml file data gets displayed. I've got it to work in one location but when I move it no kml data. I've checked references to images, and file location.

I'm also using Layerswitcher https://github.com/walkermatt/ol3-layerswitcher

After checking and double checking references, I still got nothing.

My layerswitcher script:var mapMinZoom = 6;var mapMaxZoom = 21;var mapBounds = [ -76.644773, 42.424805, -76.357081, 42.631565 ];var centerLat = (mapBounds[1] + mapBounds[3]) / 2;var centerLng = (mapBounds[0] + mapBounds[2]) / 2;var xml_data = 'http://www.myserver.com/data/assets/rep_short.kml';(function() { var map = new ol.Map({ target : 'map', layers : [ new ol.layer.Group({ 'title' : 'Base maps', layers : [ new ol.layer.Tile({ title : 'Base Map', type : 'base', visible : true, source : new ol.source.OSM() }) ] }), new ol.layer.Group({ title : 'Overlays', layers : [ new ol.layer.Vector({ title : 'Properties', source : new ol.source.KML({ projection : 'EPSG:3857', url : xml_data }) }) ] }) ], view : new ol.View({ projection : 'EPSG:3857', center : ol.proj.transform([ centerLng, centerLat ], 'EPSG:4326', 'EPSG:3857'), zoom : 12 }) }); var layerSwitcher = new ol.control.LayerSwitcher({ tipLabel : 'Légende' // Optional label for button }); map.addControl(layerSwitcher); var popup = new ol.Overlay.Popup(); //map.addOverlay(popup); map.on('singleclick', function(evt) { var prettyCoord = ol.coordinate.toStringHDMS(ol.proj.transform( evt.coordinate, 'EPSG:3857', 'EPSG:4326'), 2); popup.show(evt.coordinate, 'Coordinates

' + prettyCoord + '


'); });})();

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